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No. 622,!54. Patented Mar. 28, I899. J. JUUBERT.

MACHINE FOR DRAWING IN W ARP THREADS.

(Application filed Apr. 1, 1898.)

(No Model.)

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Patented mar. 28, I899.

No. 622,l54.

J. JDUBERT. MACHINE FOB DRAWING IN WARP THREADS.

(Applicp-tion filed Apr. 1, 1898.)

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' NITED STATES PATENT OFFICE.

JOSEPH J OUBE RT,OFv DOIZIEU, FRANCE, ASSIGNOR TO MACHINE- FAOTORY RUTI, FORMERLY CASPAR HONEGGER, OF RUTI, SWITZER- LAND.

MACHINE FOR DRAWING IN WARP-THREADS.

SPECIFICATION forming part of Letters Patent No. 622,154, dated March 28, 1899.

Application filed April 1, 1898. Serial No. 676,135. (No model.)

To all whom it may concern.-

Be it known that I, JosEPH JOUBERT, a citizen of France, residing at Doizieu, in the Department of Loire, France, have invented certain new and useful Improvements in Machines for Drawing in W arp-Threads, of which the following is a specification.

The present invention has for its object the drawing of the warp between the teeth of the slay by mechanical means and to effect the same with automatic regulation from tooth to tooth continuously. Hitherto the eye and hand of the operator occupied with the socalled drawing or slaying of the threads have been exercised to effect, with painful regularity of control, the action of the warphook in order that the same may regularly advance from one passage of the hook to another exactly for one tooth, (not more and not less.) In this case the operating of the hook, the drawing back of the same, and the following advance of one tooth are effected absolutely mechanically and without possibility of failure.

In the accompanying drawings the invention is illustrated.

Figure 1 shows a plan of the drawing organs. Figure 2 shows an end view of the apparatus Fig. 3, afront elevation of the same; Fig. 4, a detailed lateral view of the drawing organs on a somewhat larger scale, and Fig. 5 a diagram of the adjustments thereof. Fig. 6 is an end view of the machine with the actuating mechanism. Fig. 7 is a front view of the same; and Fig. 8 is a section following the line as 00, Fig. 2.

The letter a indicates the slay. The lower portion of the slay-frame is fitted into and held by the longitudinal groove of a cross-bar a, (see Figs. 2, 6, and 7,) fixed to the standard of the machine.

The principal organs of the machine for drawing in warp-threads are as follows: The

warp-hook b, the counter plate c, restinglightly against its point, and the plate cl, which accompanies the warp-hook b and rests lightly upon the plate 0. The part a (see Fig. 2) is rigid, and the parts I) and d are pivoted. They stand opposite one another, fixed upon a slide 6, which moves in the frame ff and which is moved to and fro by a toothing e on its under surface, which engages in a gearwheel 9. The frames f f are carried by the jointed arms h h h 7L3. Every two of these arms, which are placed upon the same side of the screw-spindle i, are connected by bolts jj j j above and by bolts j j j j below, at the same distance, on the one hand with the traveler 7.0 and on the other hand with the frames ff. In this manner are formed two parallelograms, which cause a. sidewise motion of the above-mentioned main organs, but at the same time maintain their exactly parallel and vertical position. side a roller Z Z, which rollers impinge upon two bars Z Z parallel with the screw-spindle. The screw-spindle i has a longitudinal groove i, Figs. 2, 3, and 8, in which the pin m, which is connected with the gear-wheel g, engages, so that at the alternate revolutions of the spindle 2' the wheel g is always moved.

remains standing at the left motion of the slide a, Fig. 2.

As, however, a pin p, engaging in the thread of the screw-spindle, is connected with the intermediate wheel 11, it follows that if the wheel n does not turn while the screw-spindle makes a motion of revolution a certain sidewise displacement of the former will take place in the longitudinal direction of the latter, and consequently also a displacement of the whole traveler, in which the wheel g and the intermediate wheel 72 are supported concentrically with the screwspindle.

The hook 0 forms one arm of an angle-lever, under the other arm (1 of which one arm 8 of a second angle-lever r engages. The said arm 8 has above it a regulating-screw 15, against which the frame f f rests when it moves to the left. (See Fig. 3.) Then, owing to the action of this angle lever, the hook o is held away from the teeth of the wheel 12, and no motion of the traveler takes place in the longitudinal direction of the screw-spindle. In order that the engagement of the wheel 9 in the tooth of the frame f f may always remain correct, even when the frame f f is pushed to the left or the right and at the same time sinks somewhat downward, the teeth thereof are of a suitable profile of ball shape. The alternating revolving motion of the screw-spindle i can be effected by means of a pedal 1', belts i pulleys t fixed upon the spindle t', and counter-springs i 1'. Figs. 6 and 7.)

, The operation of the principal organs is illustrated in Fig. 5 by four difierent positions thereof with respect to the slay a, into which the warp is drawn.

First position.In the tooth-space through which the counter blade 0 passes a warpthread has been drawn in from left to right.

Second position.-The slid e,with parts Z) c d, is moved in the frames ff from right to left. The accompanying plate 61 passes, with the plate c,through the same toothaperture,while the warp-hook b engages in the tooth-aperture lying next to the right and passes through them.

Third position.--The warp-hook Z) and the plate (I are separated by one tooth. The piece 0 is out of reach of the slay a. The next following warp-thread is now inserted by hand in the slot to of the hook I).

Foztrthposition.-The slide,with parts I) c 61, moves again back from left to right. At this the piece 0 passes, together with the hook I), through the same tooth-aperture and rests upon the piece I). The piece (1 permits the tooth, which is between itself and the hook I), to pass out and then rests on the further motion to the right again upon the part c.

The motion thus comes again into first position, in which the drawn-in warp-threads are raised by hand out of the slot '16 and held fast. Then the operation begins anew, because at the next motion to the left of the slide in its guides ff the hook Z) enters into the next following tooth-apertu re which lies to the right, and so on. As, owing to the continuous motion to the right of the said organs 1) c d, Fig. 5, the frame ff is somewhat impelled to the right, Fig. 3, it no longer rests upon the regulating-screw t. The hook 0 consequently en- This wheel gages in the teeth of the wheel n.

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no longer revolves, and the whole traveler 7c is consequently moved a little to the right. After this displacement the screw 25 again comes in contact with the frame ff, and the hook 0 is disengaged from the wheel a until, owing to successive motions to the right of the organs 1) c d, the frame f f again ceases to rest upon the screw t.

It will be obvious that the pitch of the screw of the spindle i has no importance in relation to the fineness of the slay into which the threads are drawn, but that, on the other hand,in consequence of the intermittent progress of the whole apparatus caused by the motion of the screw-spindle the fine parts-- such as the warp-hook, counter-plate, and ac-V companying plate-have, so to say, no side pressure upon the slay-teeth nor have they to suffer such a pressure from it. The warphook I) and the accompanying plate 61 are made capable of being lifted upon the pivot z, Fig. 2, for the purpose of the adjustment at the beginning of the work; also, these parts may conveniently be replaced by other parts serving the same purpose in the case of great difierences in the size of the teeth and depthvof the teeth.

Having now particularly described and ascertained the nature of my said invention and in what manner the sameis to be performed, I declare that what I claim is-- In a machine for drawingin warp-threads, the combination with the Warp-hook b, of a spring counter-plate c resting thereon,- a plate daceompanying the warp-hook and resting elastically upon the plate 0, a slide 6 carrying the parts 11, c, 01, provided with a rack e and supported by links 7L, a traveler 7s, a wheel supported therein and capable of being oscillated and axially moved and catching in the rack e, an intermediate wheel it also supported in said traveler, means for moving and stopping said wheels 9 and n, and a screwspindle t carrying the wheels g, n, and screwing the wheel a and the traveler 7c in lateral direction when the wheel 12, is stopped in rotation.

In witness whereof Ihave hereunto set my hand in presence of two witnesses.

JOSEPH JOUBERT.

\Vitnesses:

Fntntmo SUTER, HASTINGS BURROUGHS. 

